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1.
Hydrothermally reaction of Cd(NO3)2·4H2O, pimelic acid (H2Pim) mixed with two N-containing ligands of 1,2-bis(2-methyl-imidazol-1-ylmethyl)benzene (1,2-mbix) or 1,3-bis(2-methyl-imidazol-1-ylmethyl)benzene (1,3-mbix) gave rise to two new Cd(II) MOFs, [Cd(Pim)(1,2-mbix)] (1) and [Cd(Pim)(1,3-mbix)]·H2O (2). Both MOFs were structurally characterized by IR and UV–Vis spectra, single-crystal and powder X-ray diffraction, thermogravimetric analyses. MOF 1 shows a fourfold interpenetrating dia network. Differently, MOF 2 shows a 2D?→?3D interdigitated architecture base on the 63 hcb layer when 1,2-mbix was replaced by 1,3-mbix. The luminescent properties of 1 and 2 have been investigated. Furthermore, the luminescent quenching experiments suggest both MOFs exhibit good selectivity and sensitivity to detect Fe3+ and Cr2O72? in water. 相似文献
2.
The reactions of 1,2-bis(tetrazol-5-yl)benzene ( 1), 1,3-bis(tetrazol-5-yl)benzene ( 2), 1,4-bis(tetrazol-5-yl)benzene ( 3), 1,2-(Bu 3SnN 4C) 2C 6H 4 ( 4), 1,3-(Bu 3SnN 4C) 2C 6H 4 ( 5) and 1,4-(Bu 3SnN 4C) 2C 6H 4 ( 6) with 1,2-dibromoethane were carried out by two different methods in order to synthesise pendant alkyl halide derivatives of the parent bis-tetrazoles. This lead to the formation of several alkyl halide derivatives, substituted at either N1 or N2 on the tetrazole ring, as well as the surprising formation of several vinyl derivatives. The crystal structures of both 1,2-[(2-vinyl)tetrazol-5-yl)]benzene (1- N,2- N′) ( 1b) and 1,3-bis[(2-bromoethyl)tetrazol-5-yl]benzene (2- N,2- N′) ( 5d) are discussed. 相似文献
3.
Acyclic phthalaldehyde diacetal without cyclic 1,3-dihydro-1,3-dimethoxybenzo[c]furan impurity has been obtained via the reaction of 1,2-bis(dibromomethyl)benzene with trimethyl orthoformate (1:6) at 90°C in the presence of 10 mol% of ZnCl2. Hydrolysis of phthalaldehyde diacetal has led to the formation of phthalaldehyde without HBr evolution. The reaction of phthalaldehyde with trimethyl orthoformate in the presence of trifluoroacetic acid has proceeded abnormally, with the formation of the cyclic diacetal. The acyclic diacetal has been phosphorylated by chlorophosphines and the action of PCl3 and a P(III) acid ester in sequence. 相似文献
4.
A method for the synthesis of 2-phenylbenzo-1,3-ditellurole by the reaction of disodium o-benzeneditellurolate with benzylidene chloride was proposed. 2-Methylbenzo-1,3-ditellurole and benzo-1,3-ditellurole-2-carboxylic
acid were prepared by the reaction of 2-lithiobenzo-1,3-ditellurole with MeI and CO 2, respectively.
Translated from Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1132–1134, June, 2000. 相似文献
5.
A series of basket-shaped hosts with ester-crown handles have been synthesized by treating oligoethylene glycol bischloroacetates
[ClCH 2CO(OCH 2CH 2)
n
OCOCH 2Cl, n = 1, 2, 3, 4] and 1,2-bis(hydroxyethoxy)benzene bischloroacetates with a diphenylglycoluril-based molecular clip, 1,3:4,6-bis(3,6-dihydroxy-1,2-xylylene)tetrahydro-3a,6a-diphenylimidazo[5,5]imidazole-2,5(1 H, 3 H)-dione ( 1), in dimethyl sulfoxide using K 2CO 3 as a base in yields of 15, 35, 40, 38, and 20%. Their structures were identified by nuclear magnetic resonance and mass spectrum.
The reaction conditions were also studied and optimized.
Translated from Journal of Wuhan University (Natural Science Edition), 2005, 51(3) (in Chinese) 相似文献
6.
Bromination of 1,3-bis(aryl)-2-buten-1-ones by N-bromosuccinimide in anhydrous carbon tetrachloride gives Z-1,3-bis(aryl)-4-bromo-2-buten-1-ones.
The effect of the nature of substituent in the benzene ring on the course of a reaction with nucleophiles has been studied.
Heating an alcohol solution of these ketones (Ar = 4-MeOC 6H 4, 4-ClC 6H 4) in the presence of acid or in the presence of base (Ar = Ph) gave 2,4-bis(aryl)furans. Treatment of 1,3-bis(aryl)-4-bromo-2-buten-1-ones
with thioacetamide gave 2,4-bis(aryl)thiophenes. The oxidation of the halo-substituted dypnones with H 2O 2/NaOH gave (3-bromomethyl-3-aryl-2-oxiranyl)(aryl)methanones. The reaction of halo-substituted dypnones with aryl hydrazines
gave 1,3,5-triaryl-1,6-dihydropyridazines or 1,3,5-triarylpyridazinium bromides depending on the structure of the reagents. 相似文献
7.
The 2,3-bis(spiro-2-indanyl-1,3-dione)-indeno[1,2- b]furan-4-one has been synthesized by cathodic reduction of 2,2-dibromo-1,3-indandione in dichloromethane-Bu 4NBF 4. In contrast, tris-indanedione was the main product when acetonitrile was used as a solvent. Sunlight exposition of the dispiro compound afforded the tris-indandione in quantitative yield. 相似文献
8.
The structures of six benzene and three naphthalene derivatives involving bromo, bromomethyl and dibromomethyl substituents, namely, 1,3-dibromo-5-(dibromomethyl)benzene, C 7H 4Br 4, 1,4-dibromo-2,5-bis(bromomethyl)benzene, C 8H 4Br 6, 1,4-dibromo-2-(dibromomethyl)benzene, C 7H 4Br 4, 1,2-bis(dibromomethyl)benzene, C 8H 6Br 4, 1-(bromomethyl)-2-(dibromomethyl)benzene, C 8H 7Br 3, 2-(bromomethyl)-3-(dibromomethyl)naphthalene, C 12H 9Br 3, 2,3-bis(dibromomethyl)naphthalene, C 12H 8Br 4, 1-(bromomethyl)-2-(dibromomethyl)naphthalene, C 12H 9Br 3, and 1,3-bis(dibromomethyl)benzene, C 8H 6Br 4, are presented. The packing patterns of these compounds are dominated by Br…Br contacts and C—H…Br hydrogen bonds. The Br…Br contacts, shorter than twice the van der Waals radius of bromine (3.7 Å), seem to play a crucial role in the crystal packing of all these compounds. The occurrence of Type I and Type II interactions is also discussed briefly, considering the effective atomic radius of bromine, as is their impact on the packing of molecules in the individual structures. 相似文献
9.
bis(alkoxycarbonyl) complexes of platinum of the type [Pt(COOR) 2L] [L = 1,2-bis(diphenylphosphino)ethane (dppe), 1,3-bis(diphenylphosphino)propane (dppp), l,4-bis(diphenylphosphino)butane (dppb), 1,1'-bis(diphenylphosphino)ferrocene (dppf) or 1,2-bis-(diphenylphosphino)benzene (dpb); R = CH 3, C 6H 5 or C 2H 5] were obtained by reaction of [PtCl 2L] with carbon monoxide and alkoxides. Palladium and nickel complexes gave only carbonyl complexes of the type [M(CO)L] or [M(CO) 2L]. The new complexes were characterized by chemical and spectroscopic means. The X-ray structure of [Pt(COOCH 3) 2(dppf] · CH 3OH is also reported. The reactivity of some alkoxycarbonyl complexes was also investigated. 相似文献
10.
The reaction of (dpp-bian)Ga–Zn(dpp-bian) (dpp-bian is 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene) with 1,3-di(4-pyridyl)propane results in 1D coordination polymer [(dpp-bian)Ga–Zn(dpp-bian)(μ 2-1,3-Py 2(CH 2) 3)] n with the retained Ga–Zn bond. In contrast, the coordination of 1,3-di(4-pyridyl)propane to Zn atoms in the (dpp-bian)Zn–Zn(dpp-bian) complex induces the cleavage of the Zn–Zn bond which is accompanied by reduction of dpp-bian radical anions to dianions. The reaction product represents 1D coordination polymer [{(dpp-bian)Zn}(μ 2-1,3-Py 2(CH 2) 3)] n. 相似文献
11.
Ring closure of 1,2-bis(1-pyrrolylmethyl)benzene in the acid-catalysed condensation with acetone yields the 1,5-diazacyclononatriene [ O -C 6H 4(CH 2NC 4H 3-2) 2C(CH 3) 2] as the sole identifiable product. The twisted or saddle conformation of the 1,5-diazacyclononatriene, which was confirmed by X-ray crystal structure determination, is conformationally rigid in solution. The conformation of the 1,5-diazacyclononatriene prevents the formation of the target N,N′-bridged calix[4]pyrrole by further acid-catalysed condensation with acetone, the reaction affording unidentified oligomers/polymers instead. The acid-catalysed condensation of 1,3- and 1,4-bis(1-pyrrolylmethyl)benzene with acetone also yields unidentified oligomers/polymers. 相似文献
12.
The hitherto unreported compounds of general structure 3,3′-(alkanediyl)bis-(2,2,2-triaryl-1-oxa-2-stiba-3-azabenzo[d]cyclohex-5-ene) have been synthesized in 48-56% yields by the cyclization of the tetrasodium salt of N,N′-bis(2-hydroxybenzyl)-1,2-diaminoethane(II) or of N,N′-bis(2-hydroxybenzyl)-1,3-diaminopropane(II*) with R 3SbBr 2 (R = phenyl, p-tolyl, or mesityl). The tetrasodium salts were prepared by the reactions of the corresponding amines with sodium hydride. The amines (II and II*), in turn, were obtained by the sodium borohydride reduction of N,N′-bis(salicylidene)-1,2-diaminoethane and N,N′-bis-(salicylidene)-1,3,-diaminopropane, respectively. The heterocyclic compounds are air stable and moisture insensitive. These compounds have been characterized by elemental analyses, molecular weight determinations, and by IR, far IR, 1H, and 13C NMR spectral studies. © 1996 John Wiley & Sons, Inc. 相似文献
13.
Cu(I) complexes with 1,3-bis(diphenylphosphino)propane (dppp), 1,2-bis(diphenylphosphino)benzene (dppB) and perfluorinated carboxylates of the general formula [Cu(diphosphine) 2](RCOO), R=C 2F 5, C 4F 9, C 6F 13, C 8F 17, C 9F 19, have been prepared and characterized with MS, IR and 1H, 31P, 13C, 19F, 63Cu NMR spectroscopy. The presence of distinct bis-chelated cations of [Cu(diphosphine) 2] + type and uncoordinated carboxylate anions has been proposed. 相似文献
14.
Reactions of methyl chloro(phenyl)pyruvate with 1,3-bis(phenylthioureido)benzene easily afforded 1,3-bis(4-hydroxy-4-methoxycarbonyl-3,5-diphenylthiazolidin-2-ylideneamino)benzene.
Reactions of the latter with 1,2-phenylenediamines gave various derivatives of thiazolo[3,4- a]quinoxalines, including their bisanalogs.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1611–1617, September, 2006. 相似文献
15.
The thermal decomposition of 1,2 butadiene has been studied behind reflected shock waves over the temperature and total pressure ranges of 1300–2000 K and 0.20–0.55 atm using mixtures of 3% and 4.3% 1,2 butadiene in Ne. The major products of the pyrolysis are C 2H 2, C 4H 2, C 2H 4, CH 4 and C 6H 6. Toluene was observed as a minor product in a narrow temperature range of 1500–1700 K. In order to model successfully the product profiles which were obtained by time-of-flight mass spectrometry, it was necessary to include the isomerization reaction of 1,2 to 1,3 butadiene. A reaction mechanism consisting of 74 reaction steps and 28 species was formulated to model the time and temperature dependence of major products obtained during the course of decomposition. The importance of C 3H 3 in the formation of benzene is demonstrated. 相似文献
16.
This article describes the synthesis and the cation-radical polymerization (Scholl reaction) of 1,3-bis[4-(1-naphthoxy) benzoyl] benzene ( 6 ) and 1,4-bis[4-(1-naphthoxy) benzoyl]- benzene ( 7 ) initiated by FeCI 3. This polymerization produced poly(ether ether ketone ketone)s (PEEKK) of number average molecular weight ( M?n) up to 5400 g/mol. The synthesis of bis[4-(1-naphthoxy) phenyl] methane ( 8 ), 1,3-bis[4-(1-napthoxy) phenylmethyl] benzene ( 9 ), and 1,4-bis[4-(1-naphthoxy) phenylmethyl] benzene ( 10 ) are also described. Polyethers of M?n up to 15400 g/mol at a FeCl 3/monomer molar ratio of 2/1 were obtained. An increased polymerizability of the monomers 9 and 10 containing two CH 2 groups versus that of the corresponding monomers containing two carbonyl groups ( 6 and 7 ) was observed. This enhanced polymerizability was explained based on the increased nucleophilicity of monomers 9 and 10 . 相似文献
17.
The reduction of 1,2-bis(bromomethyl)benzene with zinc powder followed by cycloaddition with the chiral dienophile (4 R,5 S)-1-acryloyl-3,4-dimethyl-5-phenyl-2-imidazolidinone in the presence of BF 3·Et 2O under ultrasound irradiation gave the corresponding Diels–Alder cycloadduct in high yield (90%) and high diastereoselectivity ( R: S = 87:13). 相似文献
18.
Synthesis and Crystal Structure of Tris[1,3-bis(phenyltriazenido)benzene]-di-Thallium(III) Tris[1,3-bis(phenyltriazenido)benzene]-di-thallium(III) is formed by the reaction of di-sodium-1,3-bis(phenyltriazenido)benzene with thallium(I)-sulfate in a THF/H 2O mixture in the presence of oxygen. The compound crystallizes in the triclinic space group P1 1 with the lattice parameters a = 1368.8(2), b = 1539.3(2), c = 1676.0(3) pm, α = 106.04(3)°, β = 90.50(3)°, γ = 109.94(3)° and two formula units in the unit cell. The complex consists of two Tl atoms and three ligands, of which each N 3-unit acts as bidentate chelating group. The coordination sphere of Tl is trigonal prismatic with a coordination number of 6. The distances Tl? N range from 228 to 244 pm. 相似文献
19.
1,2-Bis(4-aminophenoxy)benzene was synthesized in two steps by the preparation of 1,2-bis(4-itrophenoxy)benzene from 1,2-dihydroxybenzene (catechol) and p-chloronitrobenzene and subsequent reduction with a 10% Pd-C catalyst and hydrazine hydrate. Aromatic polyamides with an inherent viscosity in the range of 1.08–2.00 dL/g were prepared by the direct polycondensation of this diamine with various aromatic dicarboxylic acids in N-methyl-2-pyrrolidone (NMP) using triphenyl phosphite and pyridine as condensing agents. Most of the polymers formed were soluble in aprotic solvents such as NMP and N,N-methylacetamide (DMAc), and afforded transparent, flexible, and tough films upon casting from DMAc solutions. Most of the cast films showed obvious yield points in their stress-strain curves and had tensile strength among 64–89 MPa, elongation at break among 5–23%, and initial modulus in 1.7–2.5 GPa. The glass transition temperatures ( Tg) of these polymers were in the range of 207–278°C, and the 10% weight loss temperatures were recorded above 475°C in nitrogen and above 452°C in air. © 1995 John Wiley & Sons, Inc. 相似文献
20.
Two novel macrocyclic tetra-imine-diphenol Schiff base (H 2L 1 and H 2L 2) were synthesized by [2 + 2] cyclocondensation of ortho-aminophenyl diamines [1,2-bis(2′-aminophenoxy)benzene (I) and 1,2-bis(2′-aminophenoxy)-4-t-butylbenzene (II)] with 2,6-diformyl-4-methylphenol. Two novel tetra-amine-diphenol macrocycles (H 2L 3 and H 2L 4) have been obtained by reduction of the imine analogs with NaBH 4 in MeOH/CHCl 3. 相似文献
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